A relation of mine uses hotline for me for some leisure travel.

When we use it together, it won't work in Firefox, Chrome or Safari properly - on the first page (when it lists all deals), upon entering the destination name/code, it ends up in a loop that can only be broken by hitting "enter" about 50 times (or in Chrome, by using the option to prevent further dialogues). We don't have IE as we are on Macs...!

Really annoying. We have worked around it by simply entering travel dates first, then typing the IATA code quickly before hitting enter - not ideal, but the problem does not recur once you are past the first screen and into the normal BA booking engine (with the red "D" beside the prices on each day).

Just thought someone might want to know...