What sites have the "Challenge a friend" option?

[twistedbeats]

i know anyone can make a private table on party
i know you can challenge a player to a heads up sit and go on ultimatebet
i know it is possible (i don't know how) to set up private tournaments on poker stars.

does anyone know of anywhere else along these lines?

i think prima also lets you set up private tables

[Sponger15SB]

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i think prima also lets you set up private tables

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Well, they have heads up cash game tables.

[orentha]

i think you need to have a certain amount of FPP's to be able to set up private games on pokerstars...

[eviljeff]

the Poker Room skins let you do this

[BigBrother]

Related question about Party:

Can your friend sit with you at a private table if they are NOT allowed to sit with you at a public table?

I assume that if Party is blocking us from sitting together then they would do it across the board, but it would be nice to be able to share a friendly game occasionally.

[Seether]

You can sit with anyone on private tables on party (including those you cant normally sit with)