Now that we're headed deep into the middle of summer, it's time to bring out water balloons and figure out ingenious ways to fling them at your enemies. Here's a great tutorial at Instructables for making a wicked water balloon catapult using surgical tubing, a rag and other random doohickies from around the house. According to the dude responsible for this weapon of watery destruction, this shooter will never explode the water balloon prematurely, unlike some of the types you get in stores. [Instructables]

Santa Cruz opts for micro-Fi: the City had hoped to get a full deployment, but has decided to start with a hotzone in their tourist areas, which is far easier to build and quantify the success of.

Boingo releases Mac client for its aggregated service: The free GoBoingo for Mac client works with Leopard, at last. Boingo resells U.S. and worldwide service at $22 and $40 per month, respectively, for unlimited use.

Hackers tried to entice users into downloading the Storm bot Trojan on July 4 with a flood of Fourth of July spam containing links to malicious sites, several security companies reported.