Sky.Com News – the news with the web’s agenda – is on-air and online from 7.30pm. Tonight’s presenter, Helen Fospero, explains what’s coming up:

As the former head of MI6 is called before the Diana Inquest to answer a string of claims by Mohamed al Fayed we’ll be asking if the hearing has just become an outlet for conspiracy theories and wild claims.

Sir Richard Dearlove has given a point-blank denial that the security services were involved in the Princess’ death.

Yesterday Mr al Fayed used his appearance to allege that dozens of high profile people including Tony Blair and the Duke of Edinburgh were involved in a plot to assassinate Diana and Dodi.

We’ll be looking at what the online community makes of it all, and speaking to the author of ‘Diana: The Last Days’ and Sky News expert commentator Martyn Gregory.

We’ll also be asking how far Hillary Clinton will go to claw back the lead in the Democratic race for nomination. After 10 straight win, Barack Obama has pulled ahead in terms of pledged delegates – so will Clinton resort to dirty tricks?

Some bloggers have suggested her campaign team are behind allegations that Obama’s supporters are “creepy” and “like a cult”. We’ll get the views of our US Correspondent Robert Nisbet.

Plus we’ll bring you the great new spoof video of Obama and Clinton which has already notched up over 330,000 hits on Youtube.

Plus, more on the news that three people have been arrested in connection with the death of Irish model Katy French. The 24-year-old collapsed at a friend’s home in County Meath in December. We’ll be hearing from our correspondent in Ireland, Tadhg Enright, and looking at the reaction online.

Plus we’ll be discussing the three actors chosen to replace the late Heath Ledger in the film he was sadly unable to finish work on.

Lastly we’ll have the most popular videos doing the rounds on the web, including what happened when dozens of people descended on Trafalgar Square for the latest internet-organised “freeze.”

Join us online or on TV – Sky News 501 or Freeview 82 at 7.30pm.

Here are the links to all the blogs, videos and stories featured tonight:

The most-clicked stories on Sky News Online:

Three Arrested Following Death Of Model Katy French

Four Children Killed In Minnesota Bus Crash

Bridgend ‘Not A Suicide Town’ Despite Deaths

Hillary Clinton Left Reeling By Latest Election Blow

Rhys Jones: Police Find Murder Weapon

The stories moving up the web agenda:

Lifelike Motion Capture Brought To Computer Games

Movie Studios Urged To Protect Children From Watching Smoking Scenes

Treasure Hunters Claim To Have Found The Amber Room

Found At Last: World’s Oldest Missing Page

Hollywood’s ‘Three Muskateers’ Ride To Rescue Of Friend Heath Ledger

The debate lighting up the net:

Has Diana Inquest Become An Outlet For Conspiracy Theories?

Is Hillary Clinton’s Campaign Scuppered?

The best of the popular web videos:

The Big Freeze Hits Trafalgar Square

Bumpy Welcome As Plane Bounces Onto Runway

Getting The Hump? Frustrations Getting On A Camel

Free-Running In Russia

Close Call As Car Speeds Over Pavement

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