Skype has an API. Flickr has an API. For the wishlist:

Before the conversation.

Flickr Caller ID. When someone calls or texts me, show me what they've posted on flickr. Show me their flickr profile in a "who's calling" browser.

Skype a Flickr user. Let me find someone to talk with through flickr. Show a user's Skype name in their Flickr profile. So I can chat or call them. The realtime version of Flickr Mail.

Sync flickr groups with my Skype groups. Groups of people are already defined in flickr. Let me sync a group in my buddy list to a flickr group.

Launch a group chat from flickr groups. One click, instant conversation.

Populate my flickr profile from my Skype profile. Location information, affiliations, home page, my "about me" box, etc.

Add my flickr interestingness rating to my Skype profile. So when people with interesting photos call, I answer.

During the conversation.

Social browsing of flickrspace. During a call, let one or more of the participants guide the rest through flickr.

Thread flickr log. Skype knows the Skype IDs of the people in the room, in the thread of conversation. Let me see a stream or collage of their recently flickrd photos. Add visual, topical and temporal context; the joy of flickr.

After the conversation.

Upload via Skype. Skype has encrypted person-to-person file transfer. Let me use it to upload pictures to my flickr account.

Flickr presence in Skype. Show when my buddy uploads pictures to their flickr account. And make it easy to launch from my contact list to their flickr page.

Flickr is, of course, now a part of Yahoo!. Will they be able to integrate openly with other communication services? Or will they succumb to the resources and convenience of Yahoo!'s Messenger platform?