Janus Particles as Body Submarines?

Roland Piquepaille writes "Janus particles, which take their name from a Roman god with two faces, are microscopic 'two-faced' spheres whose halves are physically or chemically different. Now, U.S. researchers have shown that some of these Janus microparticles can move like stealthy submarines when an alternating electrical field is applied to liquid surrounding them. This could lead to new kinds of self-propelling microsensors or means of targeted drug delivery."

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Offtopic but Important

[TFGeditor]

Rather than hope for a front page Ask Slashdot acceptance, I decided to burn a little karma and ask here in a low reply volume discussion:

Since Friday 29 February, a number of 'net users have experienced odd behavior of discussion forums such as this one. For instance, if the problem still exists here as it does on other boards, this posy WILL NOT HAVE PARAHRAPH BREAKS (all caps to make that stand out in case it does not have said paragraph breaks). Odder still, the breaks show up during composition but not in the posted version. Only by manually entering HTML paragraph markers do paragraphs show up in the posted version.

(Note that I must actually post this to determine if the problem still exists here, so if this post looks okay, please do not assume the problem is gone net-wide (because it isn't), but only here on /.)

Is anyone else experiencing this and does anyone have an idea what is going on? (THIS IS NOT A JOKE)