To me what was troubling was that only two of the seventy five Republicans who signed the document are currently elected legislators on the national level. All the others are former officeholders or officeseekers including some like Meg Whitman who actually ran as opponents of gay marriage. I do applaud those who signed but it would be nice to see this courage when actually dealing with the Republican electorate which as your link to Instadpundit shows are still very ignorant on this issue. It’s going to take a lot for the Republican/conservative electorate to realize that gays are entitled to the same civil rights under the law as straight couples. It took the South that long with African Americans.
Edited: Meg Whitman was never elected but rather ran for governor of California.