Product idea: automatically generate dimensional metaphors with regional cultural context based on geoIP.
≈ (0.2 to 0.3) × mass of a Handy size cargo ship ( 28000 to 40000 lg tn )
≈ (0.3 to 0.5) × mass of a Small Handy size cargo ship ( 20000 to 28000 lg tn )
≈ 0.83 × daily mass of trash produced in New York City (≈ 1.2×10^7 kg )
EDIT:
For the ice slab in question, W|A gives following comparisons:
≈ ( 0.25 ≈ 1/4 ) × total area of Wales (≈ 8023 mi^2 )
≈ 1.7 × total area of Rhode Island ( 1212 mi^2 )
≈ 3 × area of forest flattened by the asteroid explosion over Tunguska in 1908 (≈ 2000 km^2 )Maybe make it a greasemonkey script - then hook into Wolfram Alpha and display from that. GeoIP might not be too big on an issue, either...
Ultimately, it's not about whether the idea is original, but how the idea is executed. Think about it - how many social networks were there before Facebook? It isn't like Facebook is original, or the first, or even the last! Similar with Google (do you really think there won't be something that takes over Google's position with search, or does it better, or different?).
Don't worry about originality! Just take your idea(s) - and try to execute them - worry about what you can control, instead of what others control.