Simon Willison’s Weblog

Monday, 23rd November 2009

Hacker News thread on Negative Cashback. Is it common practice for online stores with affiliate referral schemes to artificially inflate their prices if they’re going to have to pay out a referral bonus? # 9:44 pm

Negative Cashback from Bing Cashback (via) Some online stores show you a higher price if you click through from Bing—and set a cookie that continues to show you the higher price for the next three months. It’s unclear if this is Bing’s fault—comments on Hacker News report that Google Shopping sometimes suffers from the same problem (POST UPDATED: I originally blamed Bing for this). # 9:24 pm

django-batch-select (via) A smart attempt at solving select_related for many-to-many relationships in Django. Add a custom manager to your model and call e.g. Entry.objects.all()[:10].batch_select(“tags”) to execute two queries—one pulling back the first ten entries and another using an “IN” query against the tags table to pull back all of the tags for those entries in one go. # 4:19 pm

Node.js is genuinely exciting

I gave a talk on Friday at Full Frontal, a new one day JavaScript conference in my home town of Brighton. I ended up throwing away my intended topic (JSONP, APIs and cross-domain security) three days before the event in favour of a technology which first crossed my radar less than two weeks ago.

[... 2009 words]

jQSlickWrap. Clever jQuery plugin which allows text to wrap around irregularly shaped images, by processing the image with canvas and rewriting it as a sequence of floated horizontal bars of different widths. It’s a a modern variant of the the ragged float trick first introduced by Eric Meyer. # 7:44 am

2009 » November