I was shocked and outraged to find out this morning that a Missouri IHOP kicked four lesbians out of one of their restaurants when two of them shared an *innocent* kiss.
http://www.kansascity.com/mld/kansascity/16913352.htm While accounts vary as to the precise details, it seems to be a relatively clear-cut case of unacceptable discrimination. I know from personal experience that you can get away with a reasonable amount of "pda" at an IHOP - but apparently only if it's heterosexual. It's time that changed.
Unfortunately there is not an IHOP in NYC (in an area that everyone would feel comfortable going to or organising for), but someone I know is working on organising a Kiss-In at an IHOP in Jersey. Anyone interested should let me know and I'll pass along information as it becomes available/put you in contact with the appropriate parties.
Also? If you aren't in the Tri-State area, find your local IHOP and get active! Don't sit back and let this happen.