Well, just a mini post here. In case you did not know - PLoS One is now being indexed by ISI (see their announcement: PLoS ONE and see the PLOS blog post here
and see Erik Svensson's blog post for an interesting take) and will get an impact factor and be in their Citation Index and all such things. Now mind you, I think "Impact Factor" is a silly thing overall in that we should evaluate papers not journals per se.
So why am I writing this - because I find it pretty funny that despite being slow to recognize PLoS One ISI is now promoting the fact that they are indexing PLoS One on their home page. See the screen capture above.