Supporters of free software solutions have thrown down the gauntlet at Microsoft's feet. Christian Einfeldt of Digital Tipping Point says 'Sue Me First,' and he's not alone. More and more people are signing up and challenging Microsoft to put their lawyers where their mouth is. The free software community is far from running scared. Will Microsoft step up to the plate, or are they just continuing a scare campaign with no real ability to leverage the patents they claim open source is infringing?