Letter to the City Paper: Barely weeks after City Hall went into the hotel business, the selective socialists ring in again, this time in Hampden, hon ("Life on a Different Avenue," Mobtown Beat, Aug. 31). The recent effort by Mr. Atomic Books to curb chain-style development in "his" neighborhood completely misses all of Hampden's social and economic issues by a city mile. I can assure Benn Ray and Rachel Whang that efforts to develop the Avenue and the Rotunda have been in the works for the last seven years. The no-chain-store policy has been Hampden's default position, because no chain store would come, given the crime and income levels in the area. To understand the effects of such a policy, look at Hampden today. Tawdry signage, bad retail, decay, and vacancy. Go to the Avenue on any Friday or Saturday night and you'll see tattooed-pierced-drunken-screaming-bottle-smashing-brawling chaos, dark storefronts, and litter. It's kind of cute during th