We are dealing with them right now and it really, really, really sucks. Just had our second extermination a few days ago, we'll see if it worked when I work up the courage to sleep in my room again (I'm the only one in the house who reacts badly to the bites, I get out-of-this-world itching and nice swelling too). I'm sleeping in the basement for now which has an unrelated severe mold problem which is not the healthiest either but better than getting bitten.
My first experience with them ever and it's pretty hellish so far (the last few months). The bites are insane, they look like mosquito bites on crack for me, that pic posted looks mild to me -I get 1-1.5" very swollen red circles, that's without scratching which spreads the welts further, they itch badly for about 4 days and I can't sleep, and still itch for about 2 weeks less and less, and seems to heal very slowly (not sure yet if they'll scar). And I find it hard to sleep when my skin is crawling (psychologically). My skin crawls all day too, it's so gross to think of them lurking around waiting to bite! Most bugs don't bother me, but bedbugs and roaches give me the creeps.
My city has a bad problem with them now (for the past few years apparently, but getting worse). Apparently most of the apartment buildings in the city have had problems with them in the last few years. We're a detached home but there are 7 of us and LOTS of visitors, many sleeping over, so it's not surprising that we picked them up. We've been pretty careless with used furniture, sad to say, and we have a lot of turnover with new roommates and lots of visitors and parties. It's almost surprising we didn't get them sooner, we're like a mini-apartment.
It's very discouraging because it seems like we'll never get rid of them, and we are all students and it's very financially taxing - both the extermination which was about $1400, replacing things that had to be thrown out, and misc. preparation. Our landlord is a douche and won't pay for it.
If you never want to see how horrible the experience is, be careful with used furniture (even wood) and freeze your luggage bag for several days after travelling and wash the clothes in hot water. Apparently the #1 place to get them is hotels (several of us have been recently, including a Europe trip and Toronto which is #3 worst infested city in NA apparently) where they crawl into your luggage.