Due to the decrypting of a firmware last February and Sony's unveiling of Go! Messenger in August at Leipzig, all indications point to the PSP having Skype functionalities released for it soon.
The official "unveiling" of this VoIP function coming to the PlayStation Portable may come as soon as this weekend's Consumer Electronics Show in Las Vegas. On a special section of Sony's website, the company details the events they will be conducting at this year's CES and include an interesting feature not previously mentioned anywhere.
Sony lists this new feature under the PSP System Features column as "Call friends, talk trash to fellow gamers or catch up with acquaintances via Skype for PSP system." The website clearly states this as a feature that is presently available on the system even though it has yet to make it to the handheld.
Although no official word has come out on this, it seems like only a matter of time before Sony reveals this as a new feature in an upcoming firmware update.
The International Consumer Electronics Show (CES) is a trade show held each January in Las Vegas, Nevada, and is sponsored by the Consumer Electronics Association. The show will be running this weekend so stay tuned for new updates on this and many other updates that may come up throughout the show.
Source: Joystiq

i wonder if you would have to pay for it....it still awesome to have such a thing more the reason why i love my psp
I don't think you'd had to pay for it "wocyob". Skype is a free instant messaging program like MSN, but since MSN is Microsoft, the PSP will never run it. so U gotta think of the alternatives...
can you make phone calls with MSN? I've never used it, because it's M$. I was more of a YM person myself. Does this mean that Sony is supporting eBay now? For those who don't know, eBay bought skype for $2.6 billion in cash and stocks. Maybe they figured they needed some return on their investment? At any rate, bring it to the PS3, not PSP
Yeah skype will be free. The only downer about all this is that it's all dependent on having a wifi signal. It would be nice if wifi was everywere, but it's not. Good feature none the less.
I think you have to connect to an access-point and then you'll be able to make IP calls. Maybe you could connect to GPRS or 3 network or something. But I don't think that the PSP is capable of doing that.
psn id: gingo... i think this is brillient if its true and sony need to implement something like this in the ps3 with xfire or something because at the moment is severely needs a messaging program
@ gingo umm ps3 is working on something much better then a msnger program.. its called home its way better the any stupid instant msnger they shouldnt waste time on that junk