As someone who used to use Epinions all the time (making over $1000 from them), I have to say that the epinions "Web of Trust" system seems to work rather well, at least on a small scale (100,000 users).
Basically, you can see what users rated the article as useful. If you think that certain people have similar tastes to you, you put them in your Web of Trust. You'll get articles posted in a different order depending on who you trusted.
It is actually more complicated than that, as there are epinions "Experts" who are judged by epinions to have good ratings. I think Amazon has a similar system (and has way more users, but the system still seems to work ok).
The big problem is that the internet at large has so many bloody users and so many bloody pages... I think introducing groups of users or groups of groups that you trust might be a better way for the Web of Trust idea to work with the internet at large.
You're way off... (if only you said TTCP)
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WAP Bashing
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· Score: 1
TCP cannot work great in the wireless world. It was designed from the ground up assuming that losing a connection is the exception, not the norm. TCP Tahoe/Reno (Congestion Control) and basic networking concepts like SAR (segmentation and reassembly) and sliding window are quite different in a world where you might lose your connection for a few seconds every minute or two, versus TCP which assumes >99% uptime.
TTCP, another standard, is better suited for wireless than TCP, but alas, it isn't natively supported by most OS's.
WTP really is better suited than TCP. Also, WDP is defined to be the same as UDP for bearers supporting TCP, but what about protocols like SMS that are not TCP based? WDP provides a clean abstraction for sending datagrams when TCP/UDP/IP are not present.
HTTP is also poorly suited for wireless (3G is still a ways off). The headers are large and verbose, thus very inefficient. WSP is a good substitute for HTTP because instead of having sending twenty or so bytes to send "Content-Type: text/html" you send a single byte.
Where WAP sucks is WML. WML is currently overly restrictive and doesn't let you get the rich layout that HTML gives you. WML 2.0 will alleviate a lot of these problems, but I think in general, when most people say things like "WAP Sucks", they are referring to the quality of the underlying network, the small screen size on phones (there are several WAP browsers for PDA's), or the limitations of WML.
I think you're missing the point. The $1000 and $8000 prices you're seeing are for hardware devkits... not the chipset.
TI and Pantheon have both announced that they will be building Bluetooth IC's that they will sell in the $1 price range... much cheaper than the $5 expected.
It seems that the current market rate for bluetooth chipsets is $25-30... not too different in cost from an 802.11 chipset (which has been around for ages).
Slashdot Mirror
http://www.thecounter.com/stats/2004/May/browser.p hp
Looks like 77% of people are using IE6.0 and another 5% or so use browsers like Firefox that block popups...
Sure it's easy enough to get a 3 year old to use Linux... I wonder how many people have been able to get their grandparents to use Linux.
It seems like a great challenge because grandparents are filled with preconceived notions about computers being hard to use, viruses, technology, etc.
On the radio this morning (KROQ, Los Angeles), there was a lawyer for the RIAA talking about the recent lawsuits being brought...
She specifically stated that "while there are valid and legal uses of p2p file sharing..."
It seems like when it suits them, they are willing to accept the existence of P2P programs...
As someone who used to use Epinions all the time (making over $1000 from them), I have to say that the epinions "Web of Trust" system seems to work rather well, at least on a small scale (100,000 users).
Basically, you can see what users rated the article as useful. If you think that certain people have similar tastes to you, you put them in your Web of Trust. You'll get articles posted in a different order depending on who you trusted.
It is actually more complicated than that, as there are epinions "Experts" who are judged by epinions to have good ratings. I think Amazon has a similar system (and has way more users, but the system still seems to work ok).
The big problem is that the internet at large has so many bloody users and so many bloody pages... I think introducing groups of users or groups of groups that you trust might be a better way for the Web of Trust idea to work with the internet at large.
TCP cannot work great in the wireless world. It was designed from the ground up assuming that losing a connection is the exception, not the norm. TCP Tahoe/Reno (Congestion Control) and basic networking concepts like SAR (segmentation and reassembly) and sliding window are quite different in a world where you might lose your connection for a few seconds every minute or two, versus TCP which assumes >99% uptime.
TTCP, another standard, is better suited for wireless than TCP, but alas, it isn't natively supported by most OS's.
WTP really is better suited than TCP. Also, WDP is defined to be the same as UDP for bearers supporting TCP, but what about protocols like SMS that are not TCP based? WDP provides a clean abstraction for sending datagrams when TCP/UDP/IP are not present.
HTTP is also poorly suited for wireless (3G is still a ways off). The headers are large and verbose, thus very inefficient. WSP is a good substitute for HTTP because instead of having sending twenty or so bytes to send "Content-Type: text/html" you send a single byte.
Where WAP sucks is WML. WML is currently overly restrictive and doesn't let you get the rich layout that HTML gives you. WML 2.0 will alleviate a lot of these problems, but I think in general, when most people say things like "WAP Sucks", they are referring to the quality of the underlying network, the small screen size on phones (there are several WAP browsers for PDA's), or the limitations of WML.
I think you're missing the point. The $1000 and $8000 prices you're seeing are for hardware devkits... not the chipset. TI and Pantheon have both announced that they will be building Bluetooth IC's that they will sell in the $1 price range... much cheaper than the $5 expected. It seems that the current market rate for bluetooth chipsets is $25-30... not too different in cost from an 802.11 chipset (which has been around for ages).