This is one of those no-brainers, but you’d be surprised how many widgets out there don’t do this.
If you keep your widget size small, and offload your assets to later frames in your swf, you can easily get your brand noticed on a whole lot more social network profiles. This is because your typical social network profile has trillions of photos, slideshows, music, you name it crowding the page.
If your pre-loader has your logo, and your widget loads before almost everything else on the page, then by the transitive property of equality… users will see your logo. It’s as simple as that.